Table 1.

Fenestrations per Vessel Profile

	No. of vessels*	Range†	Average + SEM‡	Median
Normal skin	124 (2.4%)	1 to 2	1.33 ± 0.33	1
Normal skeletal muscle	251 (0%)	0	0	0
Normal brain	144 (0%)	0	0	0
EMT-6 (murine mammary carcinoma)
s.c.	88 (41%)	1 to 54	9.8 ± 1.8	6
i.c.	99 (1%)	1	1	1
M1S (murine rhabdomyosarcoma)
s.c.	181 (35%)	1 to 36	10.8 ± 1.3	8
i.c.	97 (9%)	1 to 7	2.4 ± 0.7	2
U87 (human glioblastoma)
s.c.	62 (37%)	1 to 44	10.5 ± 2.3	6
i.c.	110 (3%)	1	1	1
U251 (human glioblastoma)
s.c.	62 (37%)	1 to 44	10.5 ± 2.3	6
i.c.	87 (4%)	1 to 3	2 ± 1	2
VEGF:CHO (VEGF165-transfected CHO cells)
s.c.	119 (56%)	1 to 35	9.8 ± 0.9	8
i.c.	89 (9%)	1 to 5	2.1 ± 0.5	2

*Number of vessels counted (percentage of fenestrated vessels).

^†Range of fenestrations per vessel profile.

^‡Average number of fenestrations per vessel profile.